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1 1/2 to 2 inches

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    Admirable Grasshopper on grass stem

    Admirable Grasshopper

    Syrbula admirabilis
    image of Walker's Cicada clinging to a perch

    Annual Cicadas

    Neotibicen spp. (in Missouri) (formerly Tibicen)
    Photo of adult antlion with wings spread

    Antlion Adults

    More than 100 species in North America north of Mexico
    brokenray

    Arkansas Brokenray

    Lampsilis reeveiana
    Asian longhorned beetle male, specimen

    Asian Longhorned Beetle

    Anoplophora glabripennis
    invasive icon

    Invasive

    Female adult baskettail dragonfly perched on a plant stem

    Baskettails

    Epitheca spp.
    image of Bee Fly on leaf

    Bee Flies

    About 800 species in North America
    Photo of a belted crayfish, also called Big River crayfish.

    Belted Crayfish (Big River Crayfish)

    Faxonius harrisonii (formerly Orconectes harrisonii)
    Photo of a Big Creek crayfish.

    Big Creek Crayfish

    Faxonius peruncus (formerly Orconectes peruncus)
    image of Black Giant Ichneumon Wasp on tree trunk

    Black Giant Ichneumon Wasp

    Megarhyssa atrata
    Black saddlebags dragonfly perched on an upright twig

    Black Saddlebags

    Tramea lacerata
    Image of a female Argiope garden spider.

    Black-and-Yellow Garden Spider

    Argiope aurantia
    Male blue dasher dragonfly perched on the tip of a twig, with dew on its wings

    Blue Dasher

    Pachydiplax longipennis
    Bluefer

    Bluefer (Purpleshell)

    Potamilus purpuratus
    Closeup of brown recluse spider on floor.

    Brown Recluse (Violin Spider)

    Loxosceles reclusa
    Venomous Icon

    Venomous

    Gray, speckled, translucent gelatinous blob cut in half to show structure

    Bryozoans (Moss Animals)

    Freshwater species in the phylum Bryozoa
    butterfly

    Butterfly

    Ellipsaria lineolata
    image of Caddisfly on leaf

    Caddisflies

    About 1,500 species in North America north of Mexico
    Photo of a papershell crayfish, also called calico crayfish.

    Calico Crayfish (Papershell Crayfish)

    Faxonius immunis (formerly Orconectes immunis)
    Photo of a Caney Mountain cave crayfish out of water on a wet, red-coated cave rock.

    Caney Mountain Cave Crayfish

    Faxonius stygocaneyi (formerly Orconectes stygocaneyi)
    image of a Carolina Grasshopper

    Carolina Grasshopper

    Dissosteira carolina
    Chinese mantis

    Chinese Mantis

    Tenodera sinensis (formerly T. aridifolia)
    Two Chinese mysterysnails, out of water, resting on a white surface, with a ruler nearby for scale

    Chinese Mysterysnail

    Cipangopaludina chinensis malleata (syn. Bellamya chinensis)
    invasive icon

    Invasive

    Click beetle resting on a brick wall

    Click Beetles

    Approximately 1,000 species in North America
    Photo of a Cobra Clubtail dragonfly

    Cobra Clubtail

    Gomphurus vastus
    Wood cockroach crawling on tree

    Cockroaches and Termites

    About 100 species of cockroaches and termites in North America north of Mexico
    Photo of a coldwater crayfish.

    Coldwater Crayfish

    Faxonius eupunctus (formerly Orconectes eupunctus)
    exclamation mark

    Endangered

    image of a Common True Katydid

    Common True Katydid

    Pterophylla camellifolia
    Male common whitetail dragonfly perched on a twig

    Common Whitetail

    Plathemis lydia
    Photo of a spothanded crayfish viewed from above on white background.

    Crayfishes

    About 36 species in Missouri
    Photo of an adult damselfly on a twig next to water.

    Damselflies

    Species in the suborder Zygoptera
    deertoe

    Deertoe

    Truncilla truncata
    Photo of a devil crayfish.

    Devil Crayfish

    Lacunicambarus aff. diogenes
    Image of a differential grasshopper.

    Differential Grasshopper

    Melanoplus differentialis
    Photo of a digger crayfish.

    Digger Crayfish

    Creaserinus fodiens (formerly Fallicambarus fodiens)
    Photo of a male Banded Pennant dragonfly

    Dragonflies

    Species in the suborder Anisoptera
    Photo of a dragonfly larva resting on a stone.

    Dragonfly Larvae

    Species in the suborder Anisoptera
    Photo of eastern dobsonfly

    Eastern Dobsonfly

    Corydalus cornutus
    Male eastern Hercules beetle walking in grass

    Eastern Hercules Beetle

    Dynastes tityus
    Photo of an Eastern Pondhawk dragonfly, female

    Eastern Pondhawk

    Erythemis simplicicollis
    Side view of ebony jewelwing resting on a plant stalk

    Ebony Jewelwing

    Calopteryx maculata
    Photograph of Ebonyshell freshwater mussel shell exterior view

    Ebonyshell

    Fusconaia ebena
    exclamation mark

    Endangered

    elephant's ear

    Elephantear

    Elliptio crassidens
    exclamation mark

    Endangered

    elktoe

    Elktoe

    Alasmidonta marginata
    ellipse

    Ellipse and Bleedingtooth

    Venustaconcha ellipsiformis and V. pleasii
    Photo of male and female European wood wasps on pine stump

    European Wood Wasp (Sirex Woodwasp)

    Sirex noctilio
    invasive icon

    Invasive

    Photo of eyed click beetle on bark

    Eyed Click Beetle (Eyed Elater)

    Alaus oculatus
    fatmucket

    Fatmucket

    Lampsilis siliquoidea
    image of a Summer Fishfly

    Fishflies

    Chauliodes, Neohermes, and Nigronia spp. (in eastern US)
    Photo of a fishfly larva crawling among rocks in an aquarium.

    Fishfly Larvae

    Chauliodes, Neohermes, and Nigronia spp. (in eastern US)

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